Improvement in refrigerators



J. BENSEL. Refrigerators.

No. 206,215. Patented July 23,1878.

WITNESSES IiVVENTOR:

ATTORNEYS.

UNITED STATES PATENT OFFICE.

JACOB BENSEL, OF STOCKTON TOWNSHIP, CAMDEN COUNTY, ASSIGNOR TO AUGUSTUS REEVE, OF CAMDEN, AND JEHU WOOD, JR, OF HADDON- FIELD, JERSEY.

IMPROVEMENT IN REFRIGERATORS.

Specification forming part of Letters Patent No. 206,216, dated July 23, 1878; application filed February 16, 1878.

A represents the cover, made with double walls a a, inclosing between them a chamber or vessel, B, which is supplied with water through the mouth or opening I). C is the base, also made with double walls 0 c, inclosing between them a chamber, D.

The cover A rests with its lower edge, a,

upon the slightly-concave annular surface 0 of the base 0, and is, furthermore, prevented from being displaced by an outer surrounding rim or flange, 0 formed on the base C. Between the inner walls, a c, of the cover A and base C is the chamber E, in which are placed the substances to be preserved.

The lower edge, a of the cover A is provided with notches or slots 0, to allow free communication of air between the chamber E and the exterior for ventilating the substances contained in the chamber.

The inner wall 0 and the annular surface 0" of the base C are provided with perforations (1, through which the moisture trickling down from the walls of the cover A enters the chamber D.

Both vessels A and C are made of porous unglazed earthenware, which, as is well known, has the quality of absorbing water, on which quality I depend for the efilciency of my improvement.

The water from the chamber B percolates the porous walls a a, and evaporates on their surfaces opposite to the chamberB. The evaporation makes heat latent, and the substances are cooled, and thus preserved in the chamber E, by replacing with-their sensible heat that made latent by evaporation.

I do not limit myself to the exact form's ot the cover A and base 0, as they may be varied without departing from my invention.

I am aware that cooling-vessels have been made of double-walled earthenware; but

What I claim is As a new article of manufacture, a butter cooler consisting of two hollow, porous, or 'unglazed earthenware vessels, A C, the former having a bottom edge with notches e, and the latter an annular perforated channel, 0, as shown and described.

JACOB BENSEL.

Witnesses:

CHARLES E. FRENCH, JosEPH J. READ. 

